1, first flatten the position stained with black ink for easy handling.
2. Spray detergent on the stained area and soak for 5 minutes. Because black ink is oily, we should choose some oily lotions, such as alcohol and detergent, according to the principles of chemical similarity and compatibility. Remember not to touch other parts of the clothes that have been poured with lotion, or the marks will be dyed elsewhere.
3. When the detergent begins to foam, brush the stained area round and round with an old soft toothbrush and gently rub it repeatedly until the stain disappears.
4. Put the washed mark into the prepared water or vinegar and gently rub it. Vinegar is widely used as a natural cleaner to remove odors and stains. Disinfectant is not recommended here, it is easy to bleach clothes and it is not good-looking.
5. Take the clothes out of the water and rinse them clean. Rinse the stain with running water at room temperature.
6. Check whether the stain has been removed and dry it.